بررسي اثر دما و ضخامت پره هاي شبكه لانه زنبوري بر قابليت ريخته گري و خواص قطعات شبكه اي توليد شده از آلياژ فولاد ST37 به روش ريخته گري دقيق

Study the Effect of Temperature and Thickness of Base Network on Casting Capability and Properties of Honeycombs Produce from St37 Steel Alloy via Investment Casting

Honeycombs are known as structures which present special and unique properties. They are used in various industries and in particular aerospace industry. The effect of casting temperature and inner wall thickness of honeycombs on fillability and structural integrity of the samples were studied in this research. Various honeycomb samples of 13mm height were prepared and pressed along their diameters. Then the fracture sections were studied by a Scanning Electron Microscope. The results showed that the higher the pouring temperature, the lower were the fillability of the mold and pressure strength of the honeycombs. It is also found that as the inner wall thicknesses of honeycombs increased their pressure strength increased too. Furthermore, the fracture mode in all of the fractured surfaces was ductile and inclusions have a significant effect on the formation of such fracture surfaces.